Divergent Seismicity Convergent Seismicity Transform Seismicity
... Travel along outer layer of crust at the surface causing ground roll like a water wave and lateral shifting…travel slowly and generate the most damage ...
... Travel along outer layer of crust at the surface causing ground roll like a water wave and lateral shifting…travel slowly and generate the most damage ...
IPLS Pages - Plain Local Schools
... 12.1 Discovering Earth’s History In studying Earth’s history, geologists make use of three main ideas: • the rock record provides evidence of geological events and life forms of the past; • processes observed on Earth in the present also acted in the past; • Earth is very old and has changed over ge ...
... 12.1 Discovering Earth’s History In studying Earth’s history, geologists make use of three main ideas: • the rock record provides evidence of geological events and life forms of the past; • processes observed on Earth in the present also acted in the past; • Earth is very old and has changed over ge ...
Science
... • activity depends upon the types of crust that meet; • more dense oceanic plate slides under less dense continental plate or another oceanic plate – subduction zone, some crust is destroyed; • two continental plates converge, both plates buckle and push up into mountain ranges; Transform boundary—w ...
... • activity depends upon the types of crust that meet; • more dense oceanic plate slides under less dense continental plate or another oceanic plate – subduction zone, some crust is destroyed; • two continental plates converge, both plates buckle and push up into mountain ranges; Transform boundary—w ...
Six Weeks Test Review Key
... 18. Describe a delta, including how it forms.________Deltas are triangular deposits of sediment found at the mouth of a river. They are formed due to deposition.________________ 19. How does a valley get its shape? ____valleys are carved by weathering and erosion due to the flow of a river or the mo ...
... 18. Describe a delta, including how it forms.________Deltas are triangular deposits of sediment found at the mouth of a river. They are formed due to deposition.________________ 19. How does a valley get its shape? ____valleys are carved by weathering and erosion due to the flow of a river or the mo ...
Due Date_________________ Test Date
... - Transportation- to the movement of eroded debris, whether by rivers, glaciers, wind or ocean currents, and tides - Deposition- is the geological process by which material is added to a landform or land mass - Lithification-process of changing sediment into rock 9. What are unconformities? How do t ...
... - Transportation- to the movement of eroded debris, whether by rivers, glaciers, wind or ocean currents, and tides - Deposition- is the geological process by which material is added to a landform or land mass - Lithification-process of changing sediment into rock 9. What are unconformities? How do t ...
Earth Structure Notes
... is the most widely studied and understood. The mantle is much hotter and has the ability to flow. The ...
... is the most widely studied and understood. The mantle is much hotter and has the ability to flow. The ...
How old is our Earth
... 3. Which layer inside our earth is liquid? A) inner core *B) outer core C) Asthenosphere D) all of the above 4. What is the name for the blanket of weathered material on the surface of the earth? A) soil B) A horizon *C) regolith 5. Why is our earth’s axis of rotation tilted to one side? *A) because ...
... 3. Which layer inside our earth is liquid? A) inner core *B) outer core C) Asthenosphere D) all of the above 4. What is the name for the blanket of weathered material on the surface of the earth? A) soil B) A horizon *C) regolith 5. Why is our earth’s axis of rotation tilted to one side? *A) because ...
Plate Tectonics
... boundaries, toward each other at convergent boundaries, and past each other at transform boundaries. Convergent boundaries can be either collision [between continents] or subduction [between oceans or between oceans and continents]. ...
... boundaries, toward each other at convergent boundaries, and past each other at transform boundaries. Convergent boundaries can be either collision [between continents] or subduction [between oceans or between oceans and continents]. ...
The Thermal Evolution of an Earth with Strong Subduction Zones
... It is commonly supposed that plate tectonic rates are controlled by the temperature-dependent viscosity of Earth's deep interior. If this were so, a small decrease in mantle temperature would lead to a large decreasein global heat transport. This negative feedback mechanism would prevent mantle temp ...
... It is commonly supposed that plate tectonic rates are controlled by the temperature-dependent viscosity of Earth's deep interior. If this were so, a small decrease in mantle temperature would lead to a large decreasein global heat transport. This negative feedback mechanism would prevent mantle temp ...
Earth`s Interior Structure
... mid-ocean ridge spreading center, a collision zone similar to western South America, and possible upper mantle convection flow patterns. Large arrows indicate directions of plate motion. Small arrows and thin lines indicate possible convective flow. The subducted (underthrust) plates are not easily ...
... mid-ocean ridge spreading center, a collision zone similar to western South America, and possible upper mantle convection flow patterns. Large arrows indicate directions of plate motion. Small arrows and thin lines indicate possible convective flow. The subducted (underthrust) plates are not easily ...
Convection and Seafloor Spreading
... Harry Hess influenced by Holmes’ ideas, suggested that deep within the asthenosphere, heated material expands, becomes less dense, rises, and pushes it way up through ridges. It then moves along the base of oceanic plates, pulling the plates in ...
... Harry Hess influenced by Holmes’ ideas, suggested that deep within the asthenosphere, heated material expands, becomes less dense, rises, and pushes it way up through ridges. It then moves along the base of oceanic plates, pulling the plates in ...
Larry Braile - Purdue University
... in the Earth’s interior is: inner core - white, outer core - yellow, mantle (below the lithosphere) orange, upper mantle - red, lithosphere - brown. (See Figure on page 57 in Seismic Sleuths to illustrate the relationship of the “slice” to the spherical Earth. A slightly modified diagram from page 5 ...
... in the Earth’s interior is: inner core - white, outer core - yellow, mantle (below the lithosphere) orange, upper mantle - red, lithosphere - brown. (See Figure on page 57 in Seismic Sleuths to illustrate the relationship of the “slice” to the spherical Earth. A slightly modified diagram from page 5 ...
Plate Tectonics
... Which of the following does NOT describe primary waves? A. First to arrive B. Fastest wave\ C. “Pulse” motion (Compress) D. Side-to-side ...
... Which of the following does NOT describe primary waves? A. First to arrive B. Fastest wave\ C. “Pulse” motion (Compress) D. Side-to-side ...
What Causes EARTHQUAKES?
... caused by a catastrophic event resulting from plate movements and design possible devices or solutions to minimize the effects of that event on Earth’s surface and/or human structures. WHAT IS AN EARTHQUAKE? ______________________ are vibrations produced when rocks break along a _______________. The ...
... caused by a catastrophic event resulting from plate movements and design possible devices or solutions to minimize the effects of that event on Earth’s surface and/or human structures. WHAT IS AN EARTHQUAKE? ______________________ are vibrations produced when rocks break along a _______________. The ...
Lecture3_ptectonics2
... 1) brittle solid or 2) deform like putty or 3) melt to become a liquid. ...
... 1) brittle solid or 2) deform like putty or 3) melt to become a liquid. ...
First Hour Exam, Spring, 1999
... 2. The mantle of the Earth is a. approximately 2900 km thick. b. believed to be composed of iron- and magnesium-rich silicates at the top, and oxides at depth. c. the source for most, if not all, mafic and ultramafic magmas. d. that portion of the inner Earth immediately below the crust. e. all of t ...
... 2. The mantle of the Earth is a. approximately 2900 km thick. b. believed to be composed of iron- and magnesium-rich silicates at the top, and oxides at depth. c. the source for most, if not all, mafic and ultramafic magmas. d. that portion of the inner Earth immediately below the crust. e. all of t ...
Document
... How do we find and extract mineral resources from the earth’s crust, and what harmful environmental effects result from removing and using these minerals? ...
... How do we find and extract mineral resources from the earth’s crust, and what harmful environmental effects result from removing and using these minerals? ...
Lesson 2
... Earth’s Layers (cont.) • Scientists group the crust and the uppermost mantle into a rigid layer called the lithosphere. • The layer of rocks within the mantle, where the rock is soft enough to flow, is called the asthenosphere. • The solid rock below the asthenosphere, where high pressure prevents ...
... Earth’s Layers (cont.) • Scientists group the crust and the uppermost mantle into a rigid layer called the lithosphere. • The layer of rocks within the mantle, where the rock is soft enough to flow, is called the asthenosphere. • The solid rock below the asthenosphere, where high pressure prevents ...
Continental Drift
... As plates move over the asthenosphere they: Separate, mostly at oceanic ridges Collide, in areas such as oceanic trenches where they may be subducted back into the mantle Slide past each other along transform faults ...
... As plates move over the asthenosphere they: Separate, mostly at oceanic ridges Collide, in areas such as oceanic trenches where they may be subducted back into the mantle Slide past each other along transform faults ...
Imaging continental collision and subduction in the Pamir mountain
... Subduction of continental crust is the mode of shortening in continental collision that is the least well understood. It is known to occur, as testified e.g., by now exhumed ultra-high-pressure rocks, despite the fact that continental crust is generally too buoyant to submerge into the mantle. Conti ...
... Subduction of continental crust is the mode of shortening in continental collision that is the least well understood. It is known to occur, as testified e.g., by now exhumed ultra-high-pressure rocks, despite the fact that continental crust is generally too buoyant to submerge into the mantle. Conti ...
Geophysics
Geophysics /dʒiːoʊfɪzɪks/ is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis. The term geophysics sometimes refers only to the geological applications: Earth's shape; its gravitational and magnetic fields; its internal structure and composition; its dynamics and their surface expression in plate tectonics, the generation of magmas, volcanism and rock formation. However, modern geophysics organizations use a broader definition that includes the water cycle including snow and ice; fluid dynamics of the oceans and the atmosphere; electricity and magnetism in the ionosphere and magnetosphere and solar-terrestrial relations; and analogous problems associated with the Moon and other planets.Although geophysics was only recognized as a separate discipline in the 19th century, its origins go back to ancient times. The first magnetic compasses were made from lodestones, while more modern magnetic compasses played an important role in the history of navigation. The first seismic instrument was built in 132 BC. Isaac Newton applied his theory of mechanics to the tides and the precession of the equinox; and instruments were developed to measure the Earth's shape, density and gravity field, as well as the components of the water cycle. In the 20th century, geophysical methods were developed for remote exploration of the solid Earth and the ocean, and geophysics played an essential role in the development of the theory of plate tectonics.Geophysics is applied to societal needs, such as mineral resources, mitigation of natural hazards and environmental protection. Geophysical survey data are used to analyze potential petroleum reservoirs and mineral deposits, locate groundwater, find archaeological relics, determine the thickness of glaciers and soils, and assess sites for environmental remediation.